Best 40M Alpine Rope

[danmcph]

I have a 9.2 with a 6mm tagline for rapelling. When I made the tagline I was left with 40M of 6mm line.

 

I thought that it would be good to buy a 37M double rope. I would only buy one and use it for really easy 5th class like 5.4 or less and 4th class stuff while pairing it with the 6mm tagline for rappels.

 

Is this a bad idea?

 

What would be the best 40M double rope to purchase a single line to do this? Of course I want the lightest one I can get.

 

 

[DPS]

I use about 40 m of 6mm a season for prusiks and rappel anchors. I typically carry 20 meters or cord for anchors in addition to my prusiks on alpine climb for this purpose. Just a thought.

[danmcph]

I have a bunch of 20M sections I can use for that. What I am really shooting for is the lightest single cord setup I can for really easy ground.

[Woodcutter]

I use 7.8mm metolius monster for this.

Single strand on easy ground alpine ground where you'll never generate a high force factor fall. Double it if you need to lead a short section of steep.